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Title:
STEEL SHEET FOR HOT PRESSING AND ALUMINUM-COATED BLANK MANUFACTURED USING SAME
Document Type and Number:
WIPO Patent Application WO/2023/008670
Kind Code:
A1
Abstract:
Disclosed in an embodiment of the present invention is a steel sheet for hot pressing comprising 0.03-0.15 wt% of carbon (C), 0.1-1.5 wt% of silicon (Si), 1.0-2.0 wt% of manganese (Mn), 0.1 wt% or less of phosphorus (P), 0.01 wt% or less of sulfur (S), 0.0005-0.005 wt% of boron (B), a combined amount of at least one selected from titanium (Ti), niobium (Nb), and vanadium (V) of 0.01-1.0 wt%, 0.01-0.5 wt% of chromium (Cr), and the remainder of iron (Fe) and other inevitable impurities, wherein the steel sheet for hot pressing comprises a MnS-based inclusion, the area fraction of the MnS-based inclusion being 5% or less.

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Inventors:
KIM JE WOO SOO (KR)
YOO BYUNG GIL (KR)
HAN SEONG KYUNG (KR)
KIM DONG YONG (KR)
Application Number:
PCT/KR2022/001251
Publication Date:
February 02, 2023
Filing Date:
January 24, 2022
Export Citation:
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Assignee:
HYUNDAI STEEL CO (KR)
International Classes:
C21D8/02; C22C38/38; C22C38/24; C22C38/26; C22C38/28; C22C38/32; C23C2/12; C23C2/40
Foreign References:
JP2009256797A2009-11-05
JP6813127B12021-01-13
KR101528011B12015-06-10
KR20170138380A2017-12-15
KR20180132910A2018-12-12
KR20180095757A2018-08-28
KR101637084B12016-07-06
Attorney, Agent or Firm:
Y.P.LEE, MOCK & PARTNERS (KR)
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